I have been working on a new frame and have welded in the chainstays and seatstays. I am still having trouble getting everything to clear each other in the chainstay/chainrings/tire area and thought I was giving myself enough space this time but I did not take into account giving clearance for crank arms. The crank arms to not quite hit the chainstays but do get very close. I have a little dimpling setup I have been using for the chainring clearance but that seems like a non-ideal method for the crank arms. I used stays with a single bend in them and I feel if I replace them with double bend one I can gain the clearance I need. I am wondering if cutting out and welding in new chainstays would be a way to go or if it would be causing too much warping in the BB and across the back end as I already have the seatstays in there. I am using some single speed sliding drops from Bike Fab Supply. Are there any other considerations for welding in new tubes?